code: def _read_init(self):
      self._reader = vy_data_pickle.PickledReader(
          self._client.get(self._object_id)
      )
      self._size = self._reader.store_size
  
imports: import asyncio
  from io import UnsupportedOperation
  import logging
  import sys
  from typing import Dict, List, Optional, Tuple
  from ..lib import sparse
  from ..resource import virtual_memory
  from ..utils import implements, lazy_import, calc_size_by_str
  from .base import StorageBackend, StorageLevel, ObjectInfo, register_storage_backend
  from .core import BufferWrappedFileObject, StorageFileObject
label_desc: Use image node_id 2 for calling the VineyardFileObject obj's underlying member method code with example usage: obj._read_init() without return types